Mr. Peter N. Kellogg has been Chief Financial Officer and Executive Vice President of MERCK & Co. Inc. since August 14, 2007. He serves as a current active advisory board member to Theodent and continues to help the company expand its intellectual bases and contacts in the oral care and related fields. He received a B.S.E. from Princeton University in 1978 and an M.B.A. from The Wharton School in 1982. Mr. Kellogg served as an EVP of Finance and CFO of Biogen Idec Inc. since November 2003 and served as its Principal Accounting Officer until December 2006. Peter has also served as an EVP of Finance and CFO of Finance of Biogen Inc. (now Biogen Idec Ma Inc.) since October 2001. He served as VP of Finance and CFO of Biogen Inc. since July 2000 and also served as Principal Accounting Officer.

Mr. Kellogg also served as SVP, PepsiCo E-Commerce of PepsiCo Inc., from March to July 2000 and as SVP and CFO for Frito-Lay International from March 1998 to March 2000. From November 1996 to March 1998, he served as VP and CFO, Frito-Lay Latin America. From March 1994 to November 1996; he served as VP and CFO, Central/Eastern Europe and Russia, Pepsi-Cola International and from February 1993 to March 1994 as VP and GM-Pepsi, South Franchise Business Unit. From 1987 to 1998, he served in a variety of senior financial, international and general management positions at PepsiCo and the Pepsi-Cola International, Pepsi-Cola North America, and Frito-Lay International divisions. Mr. Kellogg has also served as a senior consultant with Booz Allen & Hamilton and Arthur Andersen & Co. He has been a Director of Metabolix, Inc. since March 30, 2007.